Home / 1,693.12-2,540.60-1,077.12

Finding the Fourth Proportional to 1,693.12, 2,540.60 and 1,077.12

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Solution

The fourth proportional to 1,693.12, 2,540.60 and 1,077.12 is: 1,616.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.12 : 2,540.60 = 1,077.12 : x
  2. Step 2: Convert to fraction form
    1,693.12/2,540.60 = 1,077.12/x
  3. Step 3: Cross multiply
    1,693.12x = 2,540.60 × 1,077.12
  4. Step 4: Simplify right side
    1,693.12x = 2,736,531.07
  5. Step 5: Solve for x
    x = 2,736,531.07/1,693.12
  6. Step 6: Final answer
    x = 1,616.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.